CN103331078A - Device for recovery of carbon disulfide in viscose fiber production - Google Patents
Device for recovery of carbon disulfide in viscose fiber production Download PDFInfo
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- CN103331078A CN103331078A CN2013102812894A CN201310281289A CN103331078A CN 103331078 A CN103331078 A CN 103331078A CN 2013102812894 A CN2013102812894 A CN 2013102812894A CN 201310281289 A CN201310281289 A CN 201310281289A CN 103331078 A CN103331078 A CN 103331078A
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- carbon disulfide
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Abstract
The invention relates to the exhaust gas recovery field in the viscose fiber industry, and provides a device for recovery of carbon disulfide in viscose fiber production. The device is characterized in that: it comprises an alkali spray tower, an absorption tower, a heat exchanger, a desorption tower, a condenser and a gas-liquid separator. The spray tower is connected to the absorption tower, the absorption tower is in connection with the heat exchanger, the heat exchanger is connected to the desorption tower, the desorption tower is connected to the condenser, which is in connection with the gas-liquid separator. The device provided in the invention has the characteristics of simple structure, high absorption rate, low investment and operation cost, and suitability for industrialized application.
Description
Technical field
The present invention relates to viscose rayon industry waste gas and reclaim the field, be specifically related to the retracting device of carbon disulfide in a kind of viscose rayon production.
Background technology
What the production of viscose rayon was generally adopted is alkaline yellow glue and acid coagulation forming technology, therefore, contains a large amount of H in the waste gas that produces in the production process of viscose rayon
2S and CS
2CS in the waste gas
2Be mainly derived from yellow, solidification forming and the plasticization drawing technology of viscose rayon, by the accessory substance generation of alkali cellulose yellow reaction, its key reaction formula is:
Na
2CS
3+H
2SO
4→Na
2S+CS
2↑+H
2S↑
C
6H
7O
2(OH)
3-X(OCSSH)
X+H
+→C
6H
10O
5+XCS
2↑
Carbon disulfide is a kind of colourless liquid at normal temperatures, and is volatile, and extreme is inflammable and have excitant, and the existence of carbon disulfide not only pollutes environment, returns to produce and bring serious potential safety hazard, therefore, must handle carbon disulfide waste gas.
201010257621.X name is called the patent of invention of " with the device and method of carbon disulfide in the solvent absorbing hydrogen sulphide gas ", discloses a kind of device and method with carbon disulfide in the paraffin oil solvent absorbing hydrogen sulphide gas.This contrive equipment mainly comprises absorption tower, Analytic Tower, gas-liquid separator, heat exchanger, cooler, heater, pump and valve etc., absorbs, separates and get H by solvent and mass transfer dynamics control procedure
2S and CS
2Product.But this Patent equipment can not be removed hydrogen sulfide, and the existence of hydrogen sulfide gas can reduce solvent to absorptivity and the saturated concentration of carbon disulfide, need go out hydrogen sulfide in advance, otherwise can reduce the utilization rate of solvent.
200710301337.6 name is called the patent of invention of " method of removing carbon disulfide gas in the production process of viscose fiber ", discloses a kind of method of removing carbon disulfide gas in the production process of viscose fiber, is the method for removing hydrogen sulfide gas.This method step is: remove H by spinning the waste gas of discharging between practice through caustic washing system
2Enter scrubbing tower behind the S gas and further remove H
2S gas, then through after spraying separator removal steam, enter the absorption cell of five parallel connections by blower fan, carry out physical absorption with activated carbon, waste gas after adsorption treatment directly is discharged into exhaust tower, the gaseous mixture of the carbon disulfide that parses, through dehumidifying, obtain the mixed liquor of carbon disulfide and water after twice condensation, soaked again obtain after specific gravity separator separates carbon disulfide liquid for the production of.Device in this patent adopts the charcoal absorption method to remove carbon disulfide, be not suitable for solvent adsorption, charcoal absorption operating cost and cost of investment are than higher, and the mass-and heat-transfer between the gas-solid is lower than the mass-and heat-transfer ability between the gas-liquid, infiltration rate is slow, and assimilation effect is good not as solvent adsorption.
Summary of the invention
The present invention is directed to above-mentioned technical problem, the retracting device of carbon disulfide in a kind of viscose rayon production is provided.Retracting device of the present invention is applicable to absorbent to the technology that carbon disulfide carries out physical absorption, and it is simple to have a device structure, the absorptivity height, and investment and operating cost are low, are suitable for the characteristics of industrial applications.
For achieving the above object, the present invention adopts following technical scheme:
The retracting device of carbon disulfide during a kind of viscose rayon is produced, it is characterized in that: comprise alkali spray column, absorption tower, heat exchanger, Analytic Tower, condenser and gas-liquid separator, described alkali spray column connects the absorption tower, the absorption tower connects heat exchanger, heat exchanger connects Analytic Tower, Analytic Tower connects condenser, and condenser connects gas-liquid separator; The carbon disulfide waste gas that produces in the viscose rayon production is removed hydrogen sulfide through the alkali spray in the alkali spray column, enter the absorption tower again, absorbent in the absorption tower absorbs the carbon disulfide in the waste gas, the carbon disulfide rich solution that absorbs after saturated is lowered the temperature through heat exchanger, obtain carbon disulfide gas and lean solution by pumping toward Analytic Tower, carbon disulfide gas enters gas-liquid separator again and carries out gas-liquid separation through condenser condenses, reclaim carbon disulfide liquid for the production of.
Because absorbent has the situation of intensification in the process that absorbs carbon disulfide, treating to change over to when carbon disulfide waste gas and absorbent reach vapor liquid equilibrium Analytic Tower resolves again, cooling operation can make carbon disulfide more stable in absorbent to the carbon disulfide rich solution, avoids discharging carbon disulfide in the process of Analytic Tower passing on through pump.
Carbon disulfide waste gas sulfide hydrogen 10000 ~ 22000mg/m3 during described viscose rayon is produced contains carbon disulfide 1500 ~ 2500mg/m3.Behind alkali spray column and absorption tower, carbon disulfide and sulfureted hydrogen gas concentration reach discharging standards in the gas, carbon disulfide 0.033mg/m3, and hydrogen sulfide 0.001mg/m3 is from the directly externally discharging of exhaust outlet at top, absorption tower.
Described absorbent is white oil.
Carbon disulfide rich solution after described absorption is saturated is cooled to 15 ~ 35 ℃ through heat exchanger.
Carbon disulfide rich solution in the described Analytic Tower behind liquid distribution trough, is heated to 150 ℃ ~ 170 ℃.
Preferably, the carbon disulfide rich solution is behind liquid distribution trough, and the carbon disulfide rich solution slowly is warming up to 140 ℃ with the speed of 10 ~ 15 ℃/min earlier, in 1 minute, be warming up to 160 ℃ again, constant temperature 20 ~ 40min, control heating rate, avoid the too fast separation of gas, influence condensation effect.
Connect blower fan before the described alkali spray column air inlet, carbon disulfide waste gas is forced into 1000Pa through blower fan and enters the alkali spray column, effectively controls gas flow rate, guarantees the high-absorbility of hydrogen sulfide.
Connect blower fan before the air inlet of described absorption tower, carbon disulfide waste gas is forced into 1000Pa through blower fan and enters the absorption tower, effectively controls gas flow rate, if gas flow rate is excessive, the vapor liquid equilibrium concentration of absorbent and carbon disulfide is just more low, is unfavorable for the utilization rate of absorbent; Gas flow rate is too small, and absorption efficiency is also more low, under this pressure, can keep good vapor liquid equilibrium between gas and the absorbent, is conducive to improve absorption efficiency.
It is 0.05 ~ 0.1MPa that described Analytic Tower is pumped to negative pressure through vavuum pump, and decompression distillation can reduce resolution temperature, avoids absorbent sex change at high temperature, and can reduce energy consumption.
Described lean solution is cooled to 15 ~ 35 ℃ through heat exchanger, gets back to the absorption tower by tube connector carbon disulfide gas is absorbed, and reaches recycling purpose.
Described carbon disulfide gas to-10 ~ 5 ℃, guarantees the carbon disulfide gas condensation effect through condenser condenses.
In the described gas-liquid separator, the uncooled carbon disulfide gas that gets off is delivered in the Analytic Tower by tube connector and circulates.The uncooled carbon disulfide gas that gets off feeds in the Analytic Tower, has improved and has separated carbon disulfide gas concentration, is conducive to improve condensation efficiency, guarantees the abundant condensation of carbon disulfide gas.
Described alkali spray column is multistage alkali spray column, and multistage alkali spray column is to be in series by a plurality of alkali spray columns.Multistage alkali spray column is conducive to improve absorption efficiency and the safety coefficient of system, and it is low as far as possible to guarantee to enter in the gas in the absorption tower concentration of hydrogen sulfide simultaneously.
Described solvent absorption tower is multistage absorption tower, and multistage absorption tower is in series by a plurality of absorption towers.Multistage absorption tower is absorption efficiency and the safety coefficient that is conducive to improve system.
Beneficial effect of the present invention is:
1, carbon disulfide solvent recovery unit of the present invention, alkali spray column, absorption tower, heat exchanger, Analytic Tower, condenser and gas-liquid separator are connected successively, earlier the carbon disulfide rich solution cooling that absorbs after saturated is entered Analytic Tower again by heat exchanger, be because the situation of intensification is arranged in the process that absorbs carbon disulfide gas, cooling can make carbon disulfide more stable in absorbent, avoids discharging carbon disulfide in the process of passing on through pump.
2, the present invention adopts white oil as the absorbent of carbon disulfide, the charcoal absorption commonly used with respect to this area, and absorptivity is higher; Though white oil belongs to the finish class, its flash-point is 220 ℃, and burning-point is higher, and can not produce cracking reaction in resolving; White oil after resolving is recycling in absorbing carbon disulfide, and absorptivity and saturated concentration have no significant change reusable edible, energy savings; The white oil cost is lower and consumption is few, absorbs, resolves that equipment is simple, easy to operate, automaticity is high, and is required artificial few, saves cost.
3, the present invention is in Analytic Tower, the carbon disulfide rich solution is behind liquid distribution trough, speed with 10 ~ 15 ℃/min slowly is warming up to 140 ℃ earlier, in 1 minute, be warming up to 160 ℃ again, constant temperature 20 ~ 40min, the control heating rate is avoided the too fast separation of gas, is conducive to gas fully condensation in condenser; Simultaneously, constant temperature 20 ~ 40min guarantees the abundant parsing of liquid.
4, the present invention connects blower fan before alkali spray column air inlet, and carbon disulfide waste gas is forced into 1000Pa through blower fan and enters the alkali spray column again, effectively controls gas flow rate, guarantees the high-absorbility of hydrogen sulfide.
5, the present invention connects blower fan before the air inlet of absorption tower, carbon disulfide waste gas is forced into 1000Pa through blower fan and enters the absorption tower again, effectively controls gas flow rate, if gas flow rate is excessive, the vapor liquid equilibrium concentration of absorbent and carbon disulfide is just more low, is unfavorable for the utilization rate of absorbent; Gas flow rate is too small, and absorption efficiency is also more low, under this pressure, can keep good vapor liquid equilibrium between gas and the absorbent, is conducive to improve absorption efficiency.
6, Analytic Tower of the present invention is pumped to negative pressure to 0.05 ~ 0.1MPa through vavuum pump, to reach the purpose of decompression distillation, can reduce resolution temperature, avoids absorbent sex change at high temperature, and can effectively reduce energy consumption.
7, the present invention is delivered to the uncooled carbon disulfide gas that gets off in the gas-liquid separator in the Analytic Tower by tube connector and circulates, the uncooled carbon disulfide gas that gets off feeds in the Analytic Tower, improved and separated carbon disulfide gas concentration, be conducive to improve condensation efficiency, guarantee the abundant condensation of carbon disulfide gas.
8, alkali spray column of the present invention adopts multistage alkali spray column, multistage alkali spray column is to be in series by a plurality of alkali spray columns, effectively improve the absorption efficiency of alkali lye, can reach more than 99% the clearance of hydrogen sulfide, it is low as far as possible to guarantee to enter in the gas in the absorption tower concentration of hydrogen sulfide simultaneously.
9, multistage absorption tower is adopted on absorption tower of the present invention, and multistage absorption tower is in series by a plurality of absorption towers, effectively improves the absorption efficiency of absorbent, can reach more than 99% the absorptivity of carbon disulfide.
Description of drawings
Fig. 1 is the structure chart of carbon disulfide solvent recovery unit during viscose rayon of the present invention is produced.
Reference numeral is: 1, alkali spray column, 2, the absorption tower, 3, Analytic Tower, 4, gas-liquid separator, 5, storage tank, 6, the carbon disulfide storage tank, 7, pump, 8, heat exchanger, 9, condenser.
The specific embodiment
Below in conjunction with the specific embodiment essentiality content of the present invention is described in further detail.
Embodiment 1
The retracting device of carbon disulfide during a kind of viscose rayon is produced, comprise alkali spray column, absorption tower, heat exchanger, Analytic Tower, condenser and gas-liquid separator, described alkali spray column connects the absorption tower, the absorption tower connects heat exchanger, heat exchanger connects Analytic Tower, Analytic Tower connects condenser, and condenser connects gas-liquid separator; The carbon disulfide waste gas that produces in the viscose rayon production is removed hydrogen sulfide through the alkali spray in the alkali spray column, enter the absorption tower again, absorbent in the absorption tower absorbs the carbon disulfide in the waste gas, the carbon disulfide rich solution that absorbs after saturated is lowered the temperature through heat exchanger, obtain carbon disulfide gas and lean solution by pumping toward Analytic Tower, carbon disulfide gas enters gas-liquid separator again and carries out gas-liquid separation through condenser condenses, reclaim carbon disulfide liquid for the production of.
Embodiment 2
The retracting device of carbon disulfide during a kind of viscose rayon is produced, comprise alkali spray column, absorption tower, heat exchanger, Analytic Tower, condenser and gas-liquid separator, described alkali spray column connects the absorption tower, the absorption tower connects heat exchanger, heat exchanger connects Analytic Tower, Analytic Tower connects condenser, and condenser connects gas-liquid separator; The carbon disulfide waste gas that produces in the viscose rayon production is removed hydrogen sulfide through the alkali spray in the alkali spray column, enter the absorption tower again, absorbent in the absorption tower absorbs the carbon disulfide in the waste gas, the carbon disulfide rich solution that absorbs after saturated is lowered the temperature through heat exchanger, obtain carbon disulfide gas and lean solution by pumping toward Analytic Tower, carbon disulfide gas enters gas-liquid separator again and carries out gas-liquid separation through condenser condenses, reclaim carbon disulfide liquid for the production of.
Alkali spray column primary structure is followed successively by the alkali lye storage area from top to bottom, waste gas feeds district, waste gas uptake zone (packing area), foam removal isolated area, tail gas discharge area; Alkali lye is delivered to alkali spray column cat head spray down by pump, comes in contact with waste gas in the packing area it is absorbed, the alkali lye after absorbing fully through reaction generation vulcanized sodium fluid storage to storage tank.
The absorption tower primary structure is followed successively by solvent condenses device, solvent storage district, waste gas feeding district, waste gas uptake zone (packing area), foam removal isolated area, tail gas discharge area from top to bottom; Lyosoption, comes in contact at packing area and waste gas it is absorbed through being delivered to by pump after the condensation under the cat head spray of absorption tower in the solvent storage district.
Saturated absorption liquid heats by heat exchanger behind liquid distribution trough, heating-up temperature is 150 ℃, because being physical absorption between carbon disulfide and the lyosoption, under heating state easily boiling and with the lyosoption separation of vaporization, carbon disulfide gas is condensation after pump is delivered to condenser, the carbon disulfide that condensation is got off by gas-liquid separator is delivered in the storage tank, and the uncooled carbon disulfide gas that gets off is delivered in the Analytic Tower again by tube connector and circulates.
Embodiment 3
Present embodiment is substantially the same manner as Example 2, on this basis:
Described absorbent is white oil.
Embodiment 4
Present embodiment is substantially the same manner as Example 3, on this basis:
Carbon disulfide rich solution after described absorption is saturated is cooled to 15 ℃ through heat exchanger.
Carbon disulfide rich solution in the described Analytic Tower behind liquid distribution trough, is heated to 170 ℃.
Present embodiment is substantially the same manner as Example 3, on this basis:
Carbon disulfide rich solution after described absorption is saturated is cooled to 35 ℃ through heat exchanger.
Carbon disulfide rich solution in the described Analytic Tower behind liquid distribution trough, is heated to 160 ℃.
Connect blower fan before the described alkali spray column air inlet, carbon disulfide waste gas is forced into 1000Pa through blower fan and enters the alkali spray column.
Embodiment 6
Present embodiment is substantially the same manner as Example 3, on this basis:
Carbon disulfide rich solution after described absorption is saturated is cooled to 25 ℃ through heat exchanger.
Carbon disulfide rich solution in the described Analytic Tower, behind liquid distribution trough, the speed with 10 ℃/min slowly is warming up to 140 ℃ earlier, is warming up to 160 ℃ again in 1 minute, constant temperature 20min.
Connect blower fan before the described alkali spray column air inlet, carbon disulfide waste gas is forced into 1000Pa through blower fan and enters spray column.
Connect blower fan before the air inlet of described absorption tower, carbon disulfide waste gas is forced into 1000Pa through blower fan and enters the absorption tower.
Present embodiment is substantially the same manner as Example 3, on this basis:
Carbon disulfide rich solution after described absorption is saturated is cooled to 30 ℃ through heat exchanger.
Carbon disulfide rich solution in the described Analytic Tower, behind liquid distribution trough, the speed with 15 ℃/min slowly is warming up to 140 ℃ earlier, is warming up to 160 ℃ again in 1 minute, constant temperature 30min.
Connect blower fan before the described alkali spray column air inlet, carbon disulfide waste gas is forced into 1000Pa through blower fan and enters the alkali spray column.
Connect blower fan before the air inlet of described absorption tower, carbon disulfide waste gas is forced into 1000Pa through blower fan and enters the absorption tower.
Embodiment 8
Present embodiment is substantially the same manner as Example 3, on this basis:
Carbon disulfide rich solution after described absorption is saturated is cooled to 20 ℃ through heat exchanger.
Carbon disulfide rich solution in the described Analytic Tower, behind liquid distribution trough, the speed with 12 ℃/min slowly is warming up to 140 ℃ earlier, is warming up to 160 ℃ again in 1 minute, constant temperature 40min.
Connect blower fan before the described alkali spray column air inlet, carbon disulfide waste gas is forced into 1000Pa through blower fan and enters spray column.
Connect blower fan before the air inlet of described absorption tower, carbon disulfide waste gas is forced into 1000Pa through blower fan and enters the absorption tower.
Embodiment 9
Present embodiment is substantially the same manner as Example 8, on this basis:
It is 0.05MPa that described Analytic Tower is pumped to negative pressure through vavuum pump.
Embodiment 10
Present embodiment is substantially the same manner as Example 8, on this basis:
It is 0.1MPa that described Analytic Tower is pumped to negative pressure through vavuum pump.
Described lean solution is cooled to 15 ℃ through heat exchanger, gets back to the absorption tower by tube connector carbon disulfide gas is absorbed, and reaches recycling purpose.
Embodiment 11
Present embodiment is substantially the same manner as Example 8, on this basis:
It is 0.06MPa that described Analytic Tower is pumped to negative pressure through vavuum pump.
Described lean solution is cooled to 35 ℃ through heat exchanger, gets back to the absorption tower by tube connector carbon disulfide gas is absorbed, and reaches recycling purpose.
Described carbon disulfide gas is through extremely-10 ℃ of condenser condenses.
Embodiment 12
Present embodiment is substantially the same manner as Example 8, on this basis:
It is 0.09MPa that described Analytic Tower is pumped to negative pressure through vavuum pump.
Described lean solution is cooled to 30 ℃ through heat exchanger, gets back to the absorption tower by tube connector carbon disulfide gas is absorbed, and reaches recycling purpose.
Described carbon disulfide gas is through condenser condenses to 5 ℃.
Embodiment 13
Present embodiment is substantially the same manner as Example 8, on this basis:
It is 0.08MPa that described Analytic Tower is pumped to negative pressure through vavuum pump.
Described lean solution is cooled to 25 ℃ through heat exchanger, gets back to the absorption tower by tube connector carbon disulfide gas is absorbed, and reaches recycling purpose.
Described carbon disulfide gas is through condenser condenses to 2 ℃.
Embodiment 14
Present embodiment is substantially the same manner as Example 13, on this basis:
In the described gas-liquid separator, the uncooled carbon disulfide gas that gets off is delivered in the Analytic Tower by tube connector and circulates.
Embodiment 15
Present embodiment is substantially the same manner as Example 13, on this basis:
In the described gas-liquid separator, the uncooled carbon disulfide gas that gets off is delivered in the Analytic Tower by tube connector and circulates.
Described alkali spray column is the multi-stage spray tower, and the multi-stage spray tower is to be in series by a plurality of spray columns.
Embodiment 16
Present embodiment is substantially the same manner as Example 13, on this basis:
In the described gas-liquid separator, the uncooled carbon disulfide gas that gets off is delivered in the Analytic Tower by tube connector and circulates.
Described alkali spray column is the multi-stage spray tower, and the multi-stage spray tower is to be in series by a plurality of spray columns.
Described solvent absorption tower is multistage absorption tower, and multistage absorption tower is in series by a plurality of absorption towers.
Claims (13)
1. the retracting device of carbon disulfide during a viscose rayon is produced, it is characterized in that: comprise alkali spray column, absorption tower, heat exchanger, Analytic Tower, condenser and gas-liquid separator, described alkali spray column connects the absorption tower, the absorption tower connects heat exchanger, heat exchanger connects Analytic Tower, Analytic Tower connects condenser, and condenser connects gas-liquid separator; The carbon disulfide waste gas that produces in the viscose rayon production is removed hydrogen sulfide through the alkali spray in the alkali spray column, enter the absorption tower again, absorbent in the absorption tower absorbs the carbon disulfide in the waste gas, the carbon disulfide rich solution that absorbs after saturated is lowered the temperature through heat exchanger, obtain carbon disulfide gas and lean solution by pumping toward Analytic Tower, carbon disulfide gas enters gas-liquid separator again and carries out gas-liquid separation through condenser condenses, reclaim carbon disulfide liquid for the production of.
2. the retracting device of carbon disulfide during a kind of viscose rayon according to claim 1 is produced, it is characterized in that: described absorbent is white oil.
3. the retracting device of carbon disulfide during a kind of viscose rayon according to claim 1 is produced, it is characterized in that: the carbon disulfide rich solution after described absorption is saturated is cooled to 15 ~ 35 ℃ through heat exchanger.
4. the retracting device of carbon disulfide during a kind of viscose rayon according to claim 1 is produced, it is characterized in that: the carbon disulfide rich solution in the described Analytic Tower behind liquid distribution trough, is heated to 150 ℃ ~ 170 ℃.
5. the retracting device of carbon disulfide during a kind of viscose rayon according to claim 4 is produced, it is characterized in that: the carbon disulfide rich solution in the described Analytic Tower, behind liquid distribution trough, speed with 10 ~ 15 ℃/min slowly is warming up to 140 ℃ earlier, in 1 minute, be warming up to 160 ℃ again, constant temperature 20 ~ 40min.
6. the retracting device of carbon disulfide during a kind of viscose rayon according to claim 1 is produced, it is characterized in that: connect blower fan before the described alkali spray column air inlet, carbon disulfide waste gas is forced into 1000Pa through blower fan and enters the alkali spray column.
7. the retracting device of carbon disulfide during a kind of viscose rayon according to claim 1 is produced, it is characterized in that: connect blower fan before the air inlet of described absorption tower, carbon disulfide waste gas is forced into 1000Pa through blower fan and enters the absorption tower.
8. the retracting device of carbon disulfide during a kind of viscose rayon according to claim 1 is produced, it is characterized in that: it is 0.05 ~ 0.1MPa that described Analytic Tower is pumped to negative pressure through vavuum pump.
9. the retracting device of carbon disulfide during a kind of viscose rayon according to claim 1 is produced, it is characterized in that: described lean solution is cooled to 15 ~ 35 ℃ through heat exchanger, gets back to the absorption tower by tube connector carbon disulfide gas is absorbed.
10. the retracting device of carbon disulfide during a kind of viscose rayon according to claim 1 is produced is characterized in that: described carbon disulfide gas is through extremely-10 ~ 5 ℃ of condenser condenses.
The retracting device of carbon disulfide during 11. a kind of viscose rayon according to claim 1 is produced, it is characterized in that: in the described gas-liquid separator, the uncooled carbon disulfide gas that gets off is delivered in the Analytic Tower by tube connector and circulates.
The retracting device of carbon disulfide during 12. a kind of viscose rayon according to claim 1 is produced, it is characterized in that: described alkali spray column is the multi-stage spray tower, and multistage alkali spray column is to be in series by a plurality of alkali spray columns.
The retracting device of carbon disulfide during 13. a kind of viscose rayon according to claim 1 is produced, it is characterized in that: described solvent absorption tower is multistage absorption tower, and multistage absorption tower is in series by a plurality of absorption towers.
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| CN104128064A (en) * | 2014-08-07 | 2014-11-05 | 青岛三瑞节能环保技术有限公司 | Process and device for treating petroleum ether-containing waste gas generated in ibuprofen synthesis process |
| CN105148624A (en) * | 2015-09-30 | 2015-12-16 | 陕西华光实业有限责任公司 | Device and method for recycling carbon disulfide in production process of xanthate |
| CN105879587A (en) * | 2015-02-16 | 2016-08-24 | 现代自动车株式会社 | Gas capture plant |
| CN106039933A (en) * | 2016-06-22 | 2016-10-26 | 成都丽雅纤维股份有限公司 | Recycling method of low-concentration CS2 in viscose fiber |
| CN107158890A (en) * | 2017-05-05 | 2017-09-15 | 安徽宣城金宏化工有限公司 | It is a kind of to be used for the processing equipment of volatile organic matter in carbon disulphide production |
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| CN106039933A (en) * | 2016-06-22 | 2016-10-26 | 成都丽雅纤维股份有限公司 | Recycling method of low-concentration CS2 in viscose fiber |
| CN107158890A (en) * | 2017-05-05 | 2017-09-15 | 安徽宣城金宏化工有限公司 | It is a kind of to be used for the processing equipment of volatile organic matter in carbon disulphide production |
| CN110280106A (en) * | 2019-06-25 | 2019-09-27 | 西安科技大学 | A kind of circulating absorption plant of underground coal mine sour gas |
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